Originally Posted by Garthr

I think there are infinite variables that could never be accounted for as to "the why" one may see rust on a bike frame, let alone anything. The seatstays were never spiraled on SLX frames as Columbus writes, they're SL. So seeing rust at the vent holes of the SL tubed seatstays obviously has nothing to do with spirals. Where and how it was kept or ridden, whether the frame was treated inside the vent holes..... as I said infinite variables. At the point of sale, who cares(or knows) how the rust got there anyways ? All the excuses in the world won't change it. https://metal-guru.com/pages/columbus-tube-families